Abstract
Abstract Samples of single phase (AISI 321) steel and two-constituent (AISI 1045) steel were irradiated with intense nitrogen plasma pulses. The action of each pulse resulted in melting of the near surface layer and introducing the dose of about 10 17 N atoms/cm 2 . For initially smooth surfaces, in AISI 321 the main morphological changes occur after the first pulse, whereas in AISI 1045 the roughness increases with the number of pulses. For initially rough AISI 1045 (i.e. R a 0.5 μm) the pulse processing results in a decrease of R a and a significant increase (by a factor of about 2) of microhardness HV 001 . Practical conclusions are drawn from these results.
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